Planning to take a trip to KIX in October. Looked and can get first class on united both ways for about 62k miles each way. Would be on the 747-400 sfo-kix. I have never gone international so no idea what to expect but trying to figure out if there is a better product that I should look into. I have Amex , UR, SPG, and United miles I can use. I can do all the research into dates and amounts and all but being a complete noob at international travel I figured I might as well look into taking the best I can take at a reasonable point usage.

The 747-400 first class suite seems pretty nice but just having not ever taken anything like that (i travel exclusively domestic for work), I just figured I should look into the best.

Sorry if this isn't posted in the right spot - i have no idea where to start and if a similar question has been asked i tried to search the forums and didn't see it but very much appreciate any advice you all can provide!!!