How much resistance should I buy?

Never used bands. Really love free weights, and wife and I travel full time so we usually go to the gym for workout and shower. However, we are traveling Baja Mexico for a few months and gyms are scarce down there.

I ordered a set of 41" Serious Steel bands, the max in that set is 60-150 lbs. Also ordered ground plate, bar, handles, and attachment strap.

Will this band be enough? Should I order another higher resistance band or two? 150 lbs is less than either of us use for free weights.

Free weight usual working weights:
Me:
Squat ~285, Bench 195-245, RDL 295
Wife:
Squat ~175, dumbbell bench press 35 lbs each hand, RDL 175 lbs