As a family of 5, yes, it's backwards. Our 1st contract was 200 SSR resale and we "sleep around" in 1bds during spring and summer with it. Booked a BRV 1bd totally last minute (4 days out) last Aug for 6 nights - I would not recommend this as a habitual strategy. You must provide the bed (air mattress or sleeping bag), sheets, towels, face cloths, etc. for the 5th person in a 1bd at BCV, SSR, BWV, BRV.
Look at a resale AKV contract. Great resort and really reasonable points for a 1bd standard that sleeps 5 (lots of room and 2 bathrooms). OKW has 3 sleeping surfaces in a 1bd as well, but shorter contract life unless you get an extended contract. Your other 5 in a 1bd options are VGF and BLT (not exactly budget resorts). Don't expect to get BWV or BLT standard view 1bds if you don't own there, even in summer. You could probably get it via waitlist, but I'd buy more points if booking those 1bds at 7months is in the plan, in order to cover the costlier views.
I wouldn't buy VB or HHI to stay at WDW on a consistent basis. YMMV.