Agreed, I wouldnt bother with travel adjust, oh and the solo air rev is fixed at 140mm. A 140mm fork with lockout wont wander too much.
I have revs and Sids and find the RCT3 solo air to be really good. Xfusion get a lot of good reviews from everyone, so I guess its about the best deal you can get.
If Weight is really important why not look at a 120mm Sid which is really light and can still handle a fair amount.