Simply no. I'd probably recommend cancelling the order and saving your money as with Size 7 diapers you have people at 30" Waists already struggling to even tape them on. You'd be better off investing in actual ABDL diapers if Prints are something you're interested in.
No, You will not be able to strap them together, but you can put them in underwear, provided that they're not floppy boxer type undies. It's what I do when I want to wear baby diapers. In fact, I have on a DG Gentle Steps S-7 diaper right now.
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Really, the vast, and I mean VAST majority of adults will not be able to fit into a baby diaper, let alone stretch it enough just to cover your unmentionables like a thong. You’re better off purchasing adult diapers that are sized to fit and work with your body as intended.
No, the straps won't "meet" when your waist is that big, but if you *really* want to wear a baby diaper like that, without using extenders, then you *may* be able to squeeze yourself into them if you pre-stretch the sides, tape the sides up, then try to ease it on like a pull-up. I wouldn't recommend doing this; it's quite tight and uncomfortable around the legs.
However, don't be afraid of trying to wear a baby diaper using an extender, like this one. It can still be quite a bit of fun!
I wear 33"-34" pants, and size 7 cruisers tapes need about 4 inches on each side to reach the landing strip. I use extenders, sort of like the ones linked to above my post, only I find the tapes from Huggies Overnights hold up better. Crafting extenders is fun!