I concur with Nick on playing Turner at PG for opening night and until Rondo gets back. I don't think Marcus is quite ready for that job. Plus, when Rondo comes back, Marcus is likely to come off the bench as PG anyway (probably working with Thornton a lot) and I'd like to keep his role consistent for a while.
Until Rondo comes back, my starting 5 would be:
Turner
Bradley
Green
Sully
Zeller
After Rondo comes back:
Rondo
Bradley
Green
Sully
Zeller
The reason I want Zeller instead of Olynyk is mainly to balance the bench, since I think Olynyk & Bass make a better front court twosome than Zeller & Bass and would provide some needed offensive punch and spacing to the 2nd unit. I also think Zeller is going to eventually be fine once he gets past his 'new guy jitters' and will provide a better defensive presence for the starting unit.
I'd still want Olynyk to get a LOT of minutes with both Sully and Zeller as well, though and would not disagree with starting him alongside Sully.
I really don't want to see Sully or Bass together much anymore. That combination has been fairly consistently awful defensively almost every time we have used it the last two seasons.