newbie! plz help asap, 613 and re-moist mask

hi wenners! wanting some helpful opinions before i pull the trigger on my first order plunging into wen! while i have been putting my cart together for a few days i have been checking out a few comments on the items in this forum and i believe i have a good starting line up in my cart, question is; i have read a few ladies here compare 613 to the re-moist mask......soooo if i am getting 613 is it safe for me to skip out on the mask and just use the 613 overnight as treatment? i am deffinately the new tea tree oil for nights before washing so its a toss up of getting the mask and oil combo or just the oil for less. any input or suggestions would be much appreciated!

(fyi if it helps any, i am african american with relaxed hair that has not been relaxed for about 10months as i just had a baby boy in january so lots of new growth that i plan on relaxing soon and hopefully keeping healthy with wen! i know going this far i could just stop the relaxing, but its just easier to manage after a certain point but hopefully with wen i can continue these long stretches! i have done it during a previous pregnancy and a few other times just because so hopefully wen will make it even easier to stretch more often! anyway now im rambling sorry for the long post and thanks in advance for any help!)

kia