Step A - Decide which defense you're using: zone; zone/press; or zone/press (practicing only press & moving to press full time in the conference schedule.  Assuming you will play zone this season (Step B is at the end - decide what you are missing and target that during recruiting), the remaining steps:

1. Of course Jenkins is your PG.  The problem is SG.  Stowell looks the part, but his defense is awful.  Since you have to start Jenkins, then you might prefer to start a guard with high speed and defense to offset Jenkins' weak defense.  Vinson might be the answer with Stowell coming off the bench at PG & SG to jack up 3's.  Sweet should be buried deep on the depth chart unless he has some blue ratings in core categories.
2. Zone teams need rebounding.  Lawson has the best REB rating, but his ATH is too low to start.  So Morris starts at C, backed up by Lawson.  
3. Jones could play SF, but Greig's LP is much too good and PER much too mediocre to play him as your SG.  So, Greig is SF & Jones PF; backed up by Dejesus & Gowan, respectively.

Step B - You need 2 quality recruits to take over at PG & SF next season.  One of those 2 might be a transfer or JuCo guard that could start right away (high speed & defense), but those can be expensive to recruit and may not be worth the risk.

thanks q_tip, i switched to zone last season, i agree with you completely about Morris at C, i hadnt even thought about starting Vinson but i think i might like that idea