I'm getting access to a 401k plan that allows rollovers from my IRAs, so I plan to roll them all into the 401k, then start doing Roth backdoor.

My question is on timing after the rollover. Can I immediately contribute the full amount in my traditional IRA and convert to Roth? Is there some waiting period or other issue to be aware of?

My plan is once my IRAs are transferred and those accounts close, immediately do a 7k contribution and recharacterize it as Roth.

Thanks