^^^ pretty accurate... you know if your product is legit? and... like the other poster just said.. what are you planning for pct? do you have ancilliaries on hand to combat estrogen(should the problem arise) and do you have caber to combat 19nor sides, should they present theirselves? If not, you should really research more before jumping on anabolics blindly! Now, I know you are getting to the age where a little test can REALLY help you... but you still need to do your homework....
Is your diet on point?(sounds like you are wanting to GAIN muscle... don't know about losing fat.. nothing stated in post)... if you are simply trying to bulk, you should know how to eat to do so(without getting too fat... but you can expect to put a little fat and muscle on, if you are going to gain the absolute max amount of muscle possible... not much necessarily, but some... if you aren't putting a little on, you could be eating more.. and you will gain more muscle, as well as a little fat)
as far as your questions.. you should start 'feeling' better within about 6-10 days of taking the testosterone(but won't see any major gains for at least another week beyond that...(you should be paying attention to the mirror more than the scale too... the scale can deceive you immensely(especially at your age, and if you have more than 12-15%bf....)...
the deca.. you should 'feel' it within about 2 weeks... and notice some increasing results about 4-5 weeks in...(these are both assuming you didn't frontload)...
anyway.. you won't gain anything if you aren't eating enough... food is the number one priority ALWAYS!!!! without it, all the drugs in the world won't do a damn thing to you!!!