LR31 or 60 - it is a matter of what slot is available in training I guess ... there are not many LR31 or 60 sims, so you don't just call a training center and book the slots you need.
Both are nice aircraft, LR60 has has more room and above all an external baggage compartment. They both have enough power, the 31 has 7000 lbs thrust (total) with a basic weight of around 11000 pounds - that gives some performance that matters ... put three engines on this plane and you could go straight up for a good while, with low weights ...
Good lucks to all,
See you sometime, LJ. By the way, what date do you start at FSI ?
TD