make sure that moisture goes to the bottom or you'll get more superficial roots than you want. As long as you have sufficient perlite or similar in the soil, you can't really go wrong. if it exhibits signs of overwatering, consider more perlite or similar next time. 50/50 for soil is great... may incerase rate of irrigation, but will lead to healthier, happier plants with fewer headaches along the way and you'll neer worry about this so-called "over/underwatering" thing cuase that's a mate of drainage 9/10 times.
1 gallon is small and you have a small plant.. so, make sure the whole theing gets wet -- some runoff is good... extra runoff is just leeching you soil of any amended nutrients it came with out of the bag, but nothing crazy bad either.. so less is more. Again, if any negatives fom this, it is the lack of drainage in the soil which you'd want to fix "next" time or whatever it transplants into.
it's small enough pot it won't remain overly wet for a long period of time... the 2nd or third irrigaiton will speed up quickly by comparison. learn weight of when it is 'dry' and if you water at that same point it'll roughly need the same volume each time, which makes planning and mixing nutes a bit easier for you. just need a sec for the roots to grow. it'll dry/dunk faster each cycle... the first cycle may be a bit slow but not long enough to rot anything.