For all the cocky ones out there (see what I did there) I say politely please shut your mouth. The ease at which you are able to attain 10k de depends on many things. How often you play, your type of playing style, and a part of it is also your trophy range. OP I think you should spend a couple of days de farming, and focus on de ONLY. The more focused you are the quicker you will reach your goal. If you think you are confident in getting 10k in a reasonable time, the sure go for it. As the others say, it's up to you :) Personally the first 10k de to farm, for me, was very difficult. Since then i've learnt a lot and can competently gain de but it takes time to learn.
In my opinion, raise your trophies and give it about a week, good luck :)

