A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
Silver is nothing on Marriott and Gold requires 50 night's, which the OP won't get.
OTOH OP might get to PlatMinus with SPG at 25 stays and otherwise will get SPG Gold, although one can essentially get these benefits with AAA membership.
IMO:
SPG PlatMinus > Marriott PP = Marriott Plat = Marriott Gold >>>>>>>>>>>>>>>>>>>> Marriott Silver
SPG Gold >>>>>>> Marriott Silver