While it won't hurt to do 5/3/1, starting with linear progression is a better first bet. The nice thing is that both are self-correcting, and there's almost no way to start too low.
Pick a weight that you can do for 3x5 in your sleep. If you start at 65% of max at a max of 300#, you are doing your max for 3 sets of 5 in 6 weeks. Reset once or twice, and then switch to 5/3/1.
The worst that will happen either way is 2 months of a suboptimal program.
Eating big will stave off overtraining, as will planned breaks.