If you stay with 24mm stock engine mount, you can use up to a 24mm Aerotech F32.
The stock 3' long 3/16" launch rod is sufficient for that.

Going to 1/4" lugs or a longer 4' rod shouldn't hurt anything but would be overkill.
If you plan to exclusively fly on 29mm F engines and above, it would be a good idea.

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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 !