Thanks for providing all the relevant information! More than enough to answer your questions.
For 1- All of these combinations will fit. Of the 3 the 15x6 with 3.25” of backspace will be closest to the fenders, the other two are better choices.
The 205/60/15 is a pretty short tire, personally I would recommend a 205/65/15 or a 215/60/15. For the 215 I’d skip the 3.25” backspace option for sure.
For question 2- Same, both of these combinations should fit easily.
C’mon man. Really no point in posting this at all. The OP posted more than enough information, the change in track width for the 73+ brakes is well known, and really only one of the possible combinations he posted is even marginally close to anything (15x6 3.25” backspace). The rest will be clear by inches and are combinations run by tons of other members. It’s not like he’s trying to put 285’s up front.