It only takes a few minutes to pull the pump on the right side and then you can have a look at how much fuel is there, if the syphon jet lines and the relief valve are still in place (things can get out of place when pulling on them while working on the other side) and check the connector if there is any problems.
You can tip the seat ahead instead of putting it over the back, might be a bit easier
Also like you found out on the other side, be careful when putting the pump back in that the foot goes into the right place, the pump can have a tendency to swing outward and miss.