NBR: DH's bday present! (kinda long?)

Okay so here we go...

Yesterday DH and I went to Best Buy to purchase a new tv for our gameroom. He wanted a large, LCD tv so watch football and hockey. And also, a Playstation 3 ("since i will be home more often with baby" haha he actually thinks he will have time to play it when baby comes... poor dh).

So we settled on a tv that was still large (50inch) and had a really nice picture. There were others that were a little more expensive, and maybe a little better, but we thought this was good enough.

As I was at the register setting things up for delivery, DH went over to the tvs again and was reading the info on another tv. I walked over and asked him what he was up to, and he just commented on how this tv (which was about $300 more and 5 inches larger) has something about it that makes watching sports better? no idea.. haha.. but something about how when players run fast regular tvs will blur and this doesn't... who knows.... But he dismissed his comment by saying, "the other one is just as good, and i wanted a PS3 too. so its a compromise."

I knew he wanted the "better" tv. What guy wouldn't? But I was happy we were able to get a tv at all, especially something this nice. AND he finally got that PS3 he ha wanted for a year.

So here is my question... his birthday is in a month. He refuses to ever celebrate or really acknowledge it. Last year we made a nice dinner, but never spoke about his birthday. I didn't get him anything. For Christmas I got him all of thi stuff (guitar hero for Wii and luggage) and he really didn't care for any of it. He hasn't even played the guitar hero! 

So I got to thinking... maybe since baby is coming RIGHT after christmas, he would want something special, something that is for HIM and not baby related. I am thinking of going back to the store and canceling the tv we already ordered (delivery isn't until a week from Sat anyway) and getting the other tv, the bigger better one.

I want to do this on the sly. And we opened a Best Buy card for the tv in his name. I was hoping that they could maybe put the exact amount that the previous tv was on the card, and allow me to pay the difference between the two? So about $300. And schedule another delivery, on a different day, that way its more of a surprise. He can come home from work and see a tv already set up.

Would this be possible to pull off? Since the card is in his name, would they give me problems for it? Or since I am a spouse, and have the card information, I could do it?

Any advice would be great!!