Lens Kit Set : One (EF-S18-135) or Two (EF-S18-55mm & EF-S 55-250mm)

[Mt Spokane Photography]

Thank you so much for your kind advice!!!! I'm really opting for the 18-135mm now, being a newbie and all I believe it'll be a good start. Once again, thank you!!!

Good Choice. You might also want one low light lens, 50mm f/1.8 is inexpensive and in a dark place, you will be happy to have it. Just keep it in a padded pouch when not using it, its fairly easy to damage if banged around.

 

[verysimplejason]

If you have that extra money, you may want to get the 55-250mm also. It is very useful because of its added reach.

 

[JohanCruyff]

So the dilemma : I'm torn between the 18-135 set or the 18-55 & 55-250 set...
I'm a total newb in DSLRs, and I was just wondering which set should I be getting???

In order to save precious storage, let me recycle this thread with a similar, but different, question.
PREAMBLE
Two days ago I sold my venerable 5D classic, bought (used) four years ago.
Just before selling (for obsolescence, possible future lack of spare parts etc.), I realized that I took 10,000 pictures in 2011-2012 and just 5,000 in 2013-2014.
I couldn't believe it: truth is that when my EOS M arrived, I started to take it with me more often than the 5D. What a lazy pervert have I become!
Now I can't decide whether to replace my 5Dc with a 6D (high IQ, slow performance in terms of AF points and FPS) or with a 70D (worse IQ, better performance). They weight more or less the same.
My real target would be a 6D Mark II, which I expect to be more or less a full frame version of the 70D... so a third option could be to skip both the 70D and the 6D, and wait for the 6D2.
Fourth option: sell the M stuff and buy a 70D and a 6D. In this case my wife could kill me, you all know how women are. ;D And you guys don't want me to stop participating to this excellent forum, do you?

So, let's go back to the topic.
MY QUESTION:
If I realize I can't wait => give in to consumerism => and buy a 70D,
considering that I already own an EF-S 55-250 IS STM,
would it make sense to buy an EF-S 18-135 STM, or a cheaper and lighter EF-S 18-55 STM would be enough or better, coupled with the 55-250?
I don't see myself using my 17-40 F/4 or my 24-105 F/4 IS on a crop body.
[A corollary could be: if I prove to be such a lazy amateur photographer, maybe I can survive with just an APS-C body (I'm not so sure, though): this event could significantly change my future purchase plans (or roadmap, as they say)].