Looking for starter plane

Great thread, I'm in the same mode right now and I'd like to run
another option past y'all.

I've been training in a PA-28-161 and I'm taking my checkride next
week. At the same time, I'm moving to a town that has no Pipers for
rent (Cessna only). I like the low wing planes, and I really want to
buy my own for my upcoming IFR training.

I can scrounge together around $20-25K out of pocket and I hate to
finance things. Since I'm an extremely low-time pilot, I don't want to
go flying with my family until I've got more practice. I've put this
together, made some cost of ownership calculations, and here's what I'm
thinking of:

Piper Tomahawk w/ IFR stack. I've seen nice looking, low time aircraft
listed in places for the 20-25 range. Here's what I get:

1. Full ownership, no financing.
2. IFR capable in the indicated pricerange.
3. Enough usable space to carry me and an instructor (I'm 250, leaving
about 160 to for a fully fueled plane).
4. Low wing
5. Low cost of ownership.

I'd love to buy a Cherokee 140, but they seem to be consistently about
10K higher. If I save up until I can afford one flat out, then that's
a bunch of time where I'm not flying. It seems that it might be a
better bet for me to get something that'll fulfill all of my needs for
the next 100 or so hours (I can always rent a Cessna for the occasional
flight I need more seats if I really decide I want to) while I build
some time and become a better pilot/get instrument rated. Finally,
I've read up a lot about the spin troubles, so my eyes are open.

Does this sound like a well reasoned approach? Am I missing anything
big? I know some of you might suggest 'go ahead and finance the
difference', but that's something I REALLY don't want to do. I'm
confident that I could get my money back out of the PA-38 when I'm
ready to upgrade to a Cherokee, and this seems like the difference
between flying and dreaming.

I want to go into this with my eyes open. Comments?