If you did want to go the 8" dob way, and are worried about carrying it, you can make a sling to carry it. Quite simple to do and the 8" is light. but awkward, but the sling takes away the awkward.
And the base is light and comes with a carry handle
You say you want GoTo, but no GoTo is very light to carry to the park, and they can take a while to polar align each time.