Cheap MTB with future upgrades v/s costly fully ready MTB

Question

Since my budget isn't that great, and I wish to get a full suspension MTB(due to local road conditions, which are rocky trail like for kilometers together). Would you recommend buying a mid range full suspension MTB, and then upgrading some components over time as funds become available?

For example, in India, the GT Verb Elite(https://www.trackandtrail.in/cycles/gt/verb-elite-27-5/) is available here for INR 84K, while the Firefox Raptor(http://www.firefoxbikes.com/BikeDetails.aspx?BikeId=177) costs INR 26.6K. The GTVE has a great frame, great suspension and forks, and also a good drive train. The FFR has extremely basic suspension and forks, but has Tourney front derailleur and Acera at the rear. The rear shock is a fairly basic KS-261, and SR Suntour 75mm travel front forks. Would it be OK to buy a good enough platform such as the FFR and then after a while, upgrade the shocks and fork, and then the drive train? I understand that a very upgraded FFR will never equal a bike like the GTVE.

These bikes are only mentioned as an example, and this not a question about merits of buying one of these bikes over the other.

Edit: I go for 20-30 kms rides on weekends. There is a main road (state highway) going through my town, with lots of car traffic, and no marked divider or lanes, which makes cycling a hazard. So, the rides are on back roads which run through rural areas, and the roads are atrocious. Many places, there is no tarmac, and dust and rocks mark the path. Which makes hardtails a bit of a PITA, literally.

Answer 1

The basic issue is that with most any new bike, if you were to add up what it costs to buy all the components and a comparable frame individually, you get a total much higher than the bike's price tag, even without including costs associated with getting those parts installed. Parts bought at retail get a whole different level of markup. That makes it hard to recommend buying a bike with the plan to upgrade it as you go. People usually get better value by buying in at a level of bike that's well-matched to their actual needs.

The other thing with full suspension bikes in particular is that the suspension designs are far from all being created equal, and the cheapest forks and shocks are extremely mediocre to actually ride. There are a lot of bikes out there where you're more buying the idea and look of full suspension than anything else - watch out for those, because no amount of upgrading really makes sense on such bikes.