Don't know about accessibility, to me removing the intake manifold goes pretty quickly.

Just make sure to remove debris or broken injection pipe clip pieces that might fall into the intake ports before you loosen the intake manifold. I was lucky during 1st removal. I now use a shop vac and air blower to clean that area 1st.

Helps to use battery drill/light impact with magnetic bit holder to speed up removal of intake bolts.

I use colored zip ties to mark the vacuum lines and take photos to help put things back in place. If vacuum hose ends are cracked/swollen nip off a little bit to help keep a tight seal. Small zip ties can also tighten vacuum tube ends.

I also use a light coat of silicone grease and anti-sieze on appropriate places. Makes removal easier next time and reduces chance of damage to threads, electrical plugs, etc..

Intake manifold gasket has always been reusable, but I have spares if needed. I usually coat the new one with a light coat of oil/silicone to reduce chance of sticking during next removal.