i have recently had orderd a 15" Orion HCCA of the internet, i have been waiting for two moneths now, because they keep saying its on backorder. So they say i can cancel that order if id like. So my questiuon is, if i canceled that order, could i get an 18" FI BTL? and would my electrical handle it? i have an AQ 2200, and il have an xs battery, and big 3 done. thx