I hope you find that perfect first pony! You definitely can't get just one and not want to buy others, so try saving and doing what your hubby said and buying one once a month. I *tried* to do something like that but with my birthday next week, I sorta splurged... Just a little bit :'D Have 6 Nirvanas coming next week.
Keep us updated on if you decide on one for sure! I'll try to help and stalk eBay for you if you decide on anything.
(I'm always stalking nirvanas on there, so I wouldn't mind keeping an eye out for certain ponies. >w> )