Why have moar boosters when you can have bigger boosters???
The mods used to make everything giant were TweakScale and BiggerBetterKerbals. If you haven't heard of the second one, that's because I made it! It's still pretty glitchy and needs a lot of work, but the main part is there and you can increase (and decrease) the size of your Kerbal with it!
Music:
Tropicana by Soundroll
Music from Uppbeat (free for Creators!):
https://uppbeat.io/t/soundroll/tropicana
License code: PBSZQCGXOOBU1TNS
Splashing Around by The Green Orbs