Solly Liners don't change from 28 to 28.5/etc. I don't remember if dalbello's do or not, but if they do it won't matter after two days.
And I think a 28/28.5 Dalbello is 326 BSL, same as Solly. I wish Dalbello's weren't so heavy, but I am in Solly Falcon CS Pros now anyways, which IMO are much better(smoother flex, lighter) and should fit almost anybody that fits into Il Moros/Kryptons. Falcons are a slightly tighter heel and toe box, with a slightly lower instep that works better with footbeds. 28.5 il moros w/liners = about 12lbs, falcon CS pros in 28.5= about 10, and Falcon 9s just under that. 29.5 FTs(325 BSL) are about 9lbs/pair I think, so I would call Falcons fairly light.