This one has been done before including the debate about the fuel selector in a PA28. The concensus then was there is no problem reaching the selector from the right hand seat so no problem flying from the right hand seat.
As others have said if you have never flown in the right hand seat try doing so a few times with another pilot or instructor. Most find the approach very unusual the first few times. I would guess there is a good chance of a very heavy landing or two if you try it by yourself. Also you should consider whether or not you could handle a FL from the right seat as well as from the left.
The other issue I dont think was previously mentioned is ensuring you have a reasonable view of the ASI. Whilst it is true you might not need an ASI to fly an approach it is no bad thing to be able to monitor the ASI in the normal way and to be aware that if it is well offset there may be some parallax error.