To put another viewpoint re the journey, my ds travels around an hour coach journey to grammar. A school coach is very different from public transport or a horrible commute to work. It’s social time with a coach full of other kids from school. They chat to friends, do homework, play on phones, etc, so an hour doesn’t seem a long time. I wouldn't want ds to do that long a journey on public transport, but a private coach with just kids from the same school is very different.
My other dc went to a local comp (which worked well for her - completely different personality) and would get home & play on her phone for an hour or a friend would drop in after school to chat or watch YouTube - really just the same stuff ds was doing except not on a coach. And my ds is less outgoing and social, so I like that he has that social time on the coach as I think it’s helped cement friendships. But my point is that a coach journey isn’t necessarily a negative thing, ds and most of his friends seem to find it fun.
Regarding after school clubs, grammars often do a lot of lunchtime activities as catchment will likely be large, so they will be aware of long journey times, but you can ask about this at open day.
The fact that there is a coach also means there are likely to be lots of children from your area going to that school, so friends won’t all be miles away as is often the case when you travel for school.
The only downside IME is that you/dh do need to think about the logistics of picking dc up if sick, or what to do if he misses the coach, etc. Also there will probably be a bit more ferrying around in the holidays. Talk to other parents whose dcs travel on the coach and get a feel for what it is actually like.
Another point is that if you decide not to apply for grammar you can’t normally change your mind & move to a grammar later (not until Y12), but if your dc started at grammar and decided it was wrong for him, you may we’ll be able to move to the comp. I think a couple of children in my ds’s class did this, and at my dd’s comp there was much more movement of students in and out, despite it being oversubscribed.
But, having had dcs at both grammar & local comp, I’d just look at which school is the best fit for your child, and which one they like and feel comfortable at.