The SST Shuttle isn't a difficult build at all.
It just has more pieces than a 3FNC. Filling/sealing all the wood is tedious.
I like "futuristic" type builds and have a whole heap of them (vintage and modern) in the kit stash.

About the ONLY rocket kit I would rate as a true Skill Level 5 is the original Estes K-41 Mercury Redstone due to that complex wooden escape tower.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !