Sounds like you've made good progress. I have a friend with a son doing option 1 and he is bored all the time. Don't think it's helped him much. Yesterday we read the article by Dr. Ruf below - which outlines her son's life story - but shows how many options there are, and how flexilbity is impotant - and more importantly outlines near the top how them not being at their pace/level affects them adversely. Her on worked with a tutor too.
http://www.educationaloptions.com/resources/resources_pg_child.phpI would opt for 3 with a back up plan or mixture of 2 and 3 as he sounds very gifted in this area - but personality would definitely need to be taken into account as well.
Let us know how it goes!
