Even if you go turbo now, you will still come out better than trying to go NA with all the upgrades. I wouldn't recommend going for NA power on a non-vtec engine as most cams will compromise driveability due to having only one cam profile on the intake and exhaust sides.

Maybe a Jackson racing supercharger might be a better option if you want to keep your parts.

Don't throw a lot of money on your DA, just keep it a fun daily driver. Piece together a turbo kit or get a used supercharger. If you think you're going to spend more than 1.5k, then save up for another platform.