I have always had a mixed approach to top mafia; with one or two exceptions, I have always tried to actually have the people I actually know (SatGuys count in that) in positions, but I made sure everyone was level 100 or higher. I have a few SBG friends in positions, as their levels are so crazy high it would be foolish not to have them there. It also helps that several of my "real" friends are also SBG members.
I just was looking at my stats -- 168 points away from level 160. Amazing, how quickly I have been moving up lately. I level every day, but only because I fight out all stamina at least 2x per day.
Jobs Completed 3653
Job Assists 116
Most consecutive days doing jobs 37
Most jobs done in one day 21
Fights Won 6121
Fights Lost 3652
Fights Won in Cuba 511
Death 82
Mobsters Whacked 109
Hitlist Kills 6
Longest Hitlist Survival 00:01:05
Successful Heist 145
Times Robbed 209
Gifts sent 66
Mega Casinos Sold 0