There are quite a few on here that use Fidelity. I totally get why Vanguard is the leader, but I already had accounts with Fidelity, and as soon as I found their Spartan funds, I saw no reason to shift over as I really liked Fido in general.
I don't do international funds, but I do have a lazy Fido portfolio:
75% - Spartan Total Market Index advantage class (FSTVX)
10% - Spartan US Bond Index advantage class (FSITX)
10% - Spartan REIT advantage class (FSRVX)
5% - cash
I have most of the cash in an Ally savings account, but some of it is "dry powder" in a money market account with Fido (less than 1% tho).
The only comment I have on your choices would be if you had taken a look at Fidelity Spartan Inflation-Protected Bond Index Fund (FSIYX) in place of the FINPX you currently have. It has a lower expense ratio, and seems to be performing better than FINPX (if I am reading the comparisons correctly - 1 year performance is 3.17% vs. 2.74%, but FSIYX is a newish fund without enough history to compare further out).
http://www.bogleheads.org/wiki/Fidelity^ what I use to check Fido funds against Vanguard