Contributed to my Non-registered instead of my RRSP, how big of a mistake did I make?

I made the mistake of contributing to my non-registered instead of my RRSP for years. I just started filling up my RRSP in the last year (had 77k room, deposited 58k today) but now my accounts are misbalanced. TFSA: 130k (maxed) FHSA: 30k (maxed) RRSP: 66k (currently maxing) None-registered: 265k (100k in cap gains) My question: In retirement when I sell and withdraw for living expenses, will I now be paying more in taxes than if I maxed my RRSP before contributing to my non-registered? I expect to retire \~65 and am 28. 100% of my portfolio is VEQT.