Hi Hun!,
Im not familiar with lace wigs or your hair care issues but lately I have been in love with u-part wigs.
You can still add a closure on top of the wig but it is sooooo much better than a sew in IMO because I can easily take it off (it has combs and clips) and get better access to my scalp.
You are able to wash, oil and do whatever else you need to your hair that you wouldn't be able to do as easily with a sew in.
Personally, I would get 3 bundles and a closure, make a upart and call it a day.