Ping fitting

I know some threads have posted similar questions, but I believe I am asking a complicated enough question to warrant a thread:

I went to Edwin Watts today to demo some irons and fairway woods. The sales rep was really pushing TM on me, but I was really liking the feel of the Ping i20's. My misses weren't terribly punished like they are with my current set of blades, but I could still feel the miss off the clubface for feedback. They had a much more solid weight to them than the TM Speedbladez did, and I think this will help counteract my tendency to overswing a bit.

Now, to my questions: first, will a custom fitting for, say, the i25 (since that's the latest model and what's in the fitting cart) translate into a proper fit for the i20's? I'm wanting to buy the 20's simply for the sake of saving some money, as I'm on a limited budget. Second (and I know this has been addressed before), would it be wrong of me to get a fitting at Edwin Watts, and then purchase a used set in the appropriate color dot elsewhere? I mean, if they just happened to have a used set in my fit, I'd be happy to buy them from the store, but that is probably an unlikely scenario.

Last, suppose I am fit and the store happens to have some used black dots in stock, are the i20's easily bent? This is all rather complicated as I likely need longer than stock shafts as well. Buying used/older model irons seems like it may be more work than it's worth.

Newer Ping irons are fairly easily adjusted, I believe Ping states on their website that they can be adjusted up to 4* either way. Even the old Eye 2's can be sent in to be bent up to 2* each way! though they do make you sign a waiver for those. You could even get fit, then see if you can negotiate the adjustments into the price of the used irons. I would assume that most places would be happy to spend 30-60 minutes adjusting a used set of clubs and get a sale as opposed to losing out on the sale entirely. As to the i25 fitting versus a using an i20 to get fit, I don't think it should make much of a difference. Iron sets usually just have lie and length adjustments, which are at least usually universal between different sets of the same brand. At least with Ping the i20's and i25's have the same stock shaft length and their color code for lies is universal for all of their clubs made in the last few years.

Good to know. I told them to give me a ring whenever some i20's came in and I would put them on layaway. These are basically going to be a wedding gift to myself, haha!