Some may say otherwise but i am sure you wait a good 4-6 weeks after install before finishing. We used Intergrain Oil Based finish for a Outdoor Bloodwood Bar top we did awhile back and we done 3 coats on top with a dry Time of a day between coats. Would be less dry time normal but depends on weather when finishing. And best bit ot was 95% organic so no nasty smells when finishing

we now use British Paints water based coating x 2 for around our pool and internal courtyard it does a better job than some others and price is great

I've coated many decks and the best advise I've been given is "leave it natural". Most timbers go grey after a few months and don't look too bad. If you want a bi-annual maintenance job the other bit of good advise I've had directly from the manufacturer is put down four coats minimum. The third and fourth coats won't use so much oil because they don't soak in. A very light sand between coats keeping in the direction of the grain is a good idea to retain a finish without wood grain or dust spoiling the final appearance. Two coats, no matter which brand or type of oil will last about a year in our sun.