Hello, i am a photographer from toronto interested in shooting on film stocks, which is why i joined the forum !
you can process the vision in c41 chemicals, which you can make from scratch if you are able to find all the chemicals, it really isnt that hard and can be put together at room temp. bh photo also sells a power c41 press kit which has gotten good reviews but i am able to get the liquid concentrates where i am. i do not know if you would be able to get the powder kit sent to where you are.
also you can remove the remjet with only baking soda and very hot water, 1 tablespoon / litre, make enough to do 5 or 6 washes, shake vigorously and keep going until the water is clear.
for the kodachrome you process k14 or b&w, BUT k14 doesnt exist anymore.
you cannot cross process the film with c41, kodachrome does not have any dye couplers in the emulsion. the k14 process adds the color.
kodacrhome was hard enough to process that kodak included the processing when you purchased the roll.