Modern Vespa

I'm looking to install a SIP side stand for use for short stops but I still want to keep my centre stand.

What are correct longer bolt measurements that I need to purchase to be able to install both together?

I use my PX for commuting a couple of times a day and I can feel having to repeatedly pull the scooter off and on it's centre stand knackering my shoulders.

Also, what is recommended out of the 76 and 82 degree angle? Am I right in saying that the 76 degree will offer a bit more protection from the scooter falling over?

Anything else I should consider?

Thanks

I have the 76 degree model on my scoot and to my liking even that is standing up too straight. It is kinda annoying to find which way the parking spot is sloped and orient the scoot to match so it does not fall over from the slightest nudge.

https://www.sip-scootershop.com/en/product/side-stand-sip-76-for-vespa-pk50-125-s-xl-xl2-px80-200-pe-lusso-98-my-11-t5_75084400

M6x35 bolts will be absolutely enough.
On my P I have 76º SIP stand and absolutely agree with FINYoshi. The automatic return works like crazy and even little force to trying up the scooter can easily cause stand closing...

Thanks to an accident, one day I simply lost the return spring(round, outer) and wanted to order a new one, but then I noticed that without it the automatic return does not work and the stand does not snap like crazy.

I also advise you to order this rubber because there is none on the stand.

My P on 76º SIP side stand.

Thankx for this.
Put a side stand on my modern Primavera. The P is way easier to pull up but would still like the option on uneven/angled surface.