Bandit Help !

I used about 20-25m mesos to meso bomb from lv 72-100. if you choose meso bomb, you'll train at Himes with a priest, which was very fun for me.
If you choose band of thieves, you need to spend meso on getting good daggers and equips, and train at regular places or buy leech.
Both scenarios require mesos, so I'd recommend meso bomb if you have priest friends to train with. This route will be faster to level up too, unless you buy leech

 

If I were in your situation I would find quest that give good scrolls, then sell scrolls and other items in FM to get Mesos, and do meso bomb route. This is because once you level up you'll be stronger and it'll be easier to make more Mesos if you're higher level.

Band of thieves is significantly slower training, but you use less Mesos, so if you don't like buying/selling at FM you can do this instead (easier but not as fast/rewarding)

using meso bomb I leveled up from 72-73 in 5mins. around lv 90 takes 20-30 minutes to lv up (including summer exp bonus).