My backdrop is currently lit with softboxes a few feet away at 45 degrees.
That's OK and, if correctly set up, should be lighting the background evenly. If it isn't it may be that the softboxes you're using are too small and / or badly designed. Good softboxes are quite expensive and there's a reason why the cheap ones cost less.
My item lights are then several feet in front of the mannequin again at 45degrees.
Your photos are flat and dull. There's no single way of lighting clothing, different types of product need different lighting, but even lighting, two lights at 45 degrees, is the worst possible way of doing it.. Try one light directly in front and a second one at a fairly acute angle, off to one side. It will look far more interesting and will also show the texture. It will however also accentuate any creases. An alternative would be to use 3 lights, both sides lit at an acute angle, the front light becomes a fill light at lower power.
My initial query was what lights I need for the Hilite. I am still unclear on that. Garry mentioned power adjustable LEDs but did not elaborate.
the short answer is that any LED will produce adequate results with it, but those lights must be adjustable for power. The reason for this is that the power needs to be set to the point where the background photographs as pure white but without overdoing it - if they aren't bright enough then it will photograph as grey and if they are too bright then they will cause flare and will also eat away at any fine detail on the edge of your subjects.
I don't understand what it is that you don't understand, but I'll try again.
You need LED lights for this, simply because you're using an i-pad not a camera.
They need to be adjustable for power, because the background needs to be slightly more bright than your subject. If it's too bright it will make the photos worse. Some LED lights are adjustable for power, others aren't, or don't have a wide enough range of adjustment.
While other suggestions have been made, with all due respect, they are made in the absence of knowing exactly what the issues are, much of what I do, how I am working, what I have tried, or what my plans are. Many of the suggestions are not suitable for me, for various reasons.
Well yes, you did keep all the important information quiet at first, and for all we knew you could have been selling left-handed widgets, but you've corrected that now.
Most of the suggestions have come from someone who runs a successful business photographing untold thousands of different products, high volume, low price, so he understands the importance of workflow as well as anyone, and from what I understand most of the products that he shoots are garments, so you should listen to him. And, as well as being a fashion and commercial photographer, I've run several successful businesses and so understand all the issues that affect all small businesses, these issues never vary, so perhaps you should listen to me too.
You keep saying that a Hi-lite is a solution. Now that we know what you're photographing I can tell you that it isn't, because apart from anything else it doesn't light the floor. They did introduce a white vinyl train to get around this, but it doesn't impress me. Several of us have told you that it won't help, including Richard (Hoppy UK) who is a vastly experienced technical writer who writes about equipment and knows far more about it than most. Listen to him too.
Your solution is simple..
1. Take more care with your lighting
2. Spend more time on image processing..
That may not be what you
want to hear, but it's what you
need to hear. If you really can't or don't want to do it yourself then pay someone else to do it for you, which makes it scaleable. Doing so will solve your perceived problems and increase your sales. Obviously, as you're selling one-off items there's a limit to what you should spend, but within reason it will pay for itself in spades.