No wedding party but .....

It's fine to not have a bridal party. And it's fine to invite your closest friends to get ready with you. But if you make a big production of inviting them with gifts I think it might be really confusing (since that's what some people do with wedding parties). Especially if you do it 2.5 years before your wedding(!).

Instead, I think it would be better to just ask them to get ready with you (close to your wedding date, not this far in advance) and then give them small gifts as tokens of your friendship that morning (not that gifts are required, but if you still want to give them gifts). That way, there's no possibility of them misinterpreting your request or intentions.

I'd just ask if they want to get ready with you on the wedding day! I think it would be nice if you were treat them to professional hair & makeup as well - that way you're really all getting ready together, instead of them just hanging out with you while you get ready!