Stocking 30 Litre Nano Tank.

i am currently cycling a 30 litre nano cube.
so far i have filled it with dennerle scapers soil as substrate, some mopani wood, a handful of live plants and i have it running with a mini filter and 50 watt heater plus the recommended light for the tank.
the soil is acting as an ammonia source and is designed to regulate the ph to 6-6.5 (currently at 6.5).
is it best to leave it run its course as it is or should i add something like safe start to speed things up a little?
should i do any water changes during the cycle or just leave it alone while the plants settle in?
as for stocking i am thinking of a single male betta or perhaps a mini community of shrimp and some nano fish.
i know i would be rather limited regarding nano sized fish but what would be a good choice?
also, what would be a good single species choice as an alternative to a betta?
i am in no rush as the tank will likely take an age to cycle. 

yes, that is what i am doing. ammonia and nitrites are at about 2 ppm nitrate at 5-10.
as i said, i am in no rush to stock and have not yet decided wether or not to have a betta or a shrimp/nano fish set up and am looking for nano fish suggestions.

yes, celestial pearl danios look very nice, sparkling gouramis would be nice for the upper level. if they are suitable for a tank this small that is.
is it ok to mix different shrimp species?

thanks,, plenty of time for me to think about it.
the tank is just about fully planted, i will see how things grow out before adding any more plants.
i have the usual vallisneria melting issue atm but it seems to have stopped and a little bit of growth is showing. no new shoots on them yet but its only been a week.
i had to exchange the original filter at the the shop as it was to noisy and put a fluval mini in there instead. i can hear this one too, it must be something to do with the tanks acoustics or something.
looks like this will set the cycle back a week but according to the blurb on the substrates packaging the active ingredients make it into a form of biological filtration itself. i just wish the ammonia and nitrites in it would seep out and clear.
i dont know if i should do a water change or not. maybe its best to leave another week and then re-test?

 when planting vallisneria it is important not to set it too deep in the substrate.
it is best not to cover all of the white part at the base of the stem. when planting a bunch of it try not to get any gravel in the crown of the bunch.
vallisneria is notorious for melting off at the tips of the leaves as they are easily damaged in transit. (the whole leaf will then die back) , quiet often it will  melt off badly as it gets used to new water conditions and people take it out before it grows back thinking it is dying off.
if you look around you may find a single bunch for £2-£3, at that price it is worth another try.