Recommend upgrade to get maximum juice / value from my AMD system

[tinornit]

Please recommend Possible upgrades to get maximum juice of this system.
purchase in USA (only via online and can't do in-store purchase) within next 2 days and bring it back to India
Purpose:
Will be running 2-3 OS in VMWARE workstation, Cisco UCS Simulator, GNS3 software ( not simultaneously though)
[For those who do not know GNS3 - it is a simulator for Cisco Routers used for doing practice labs for Cisco Networking Examination at Expert level.
Running 2-3 instances of router on GNS3 / Dynamips/Dynagen demands CPU cycles 'horsepower' ]

If you think it is not worth spending money on upgrading this please recommend what is the best that I can do with this sys?

Budget
Max $150-$200 ( Rs.12000 - Rs.14000)


My current Hardware:

CPU: AMD Phenom II X2 550 - 3.1GHz.
RAM: 4GB (DRAM Frequency-666.7 Mhz).
Mobo: ASUS M4A88T-M LE ( 880G chipset= HD4250). with PCI e 2.0
PSU: seasonic s12ii 520
GPU: ATI/AMD Radeon HD 7770/R7 250X
HDD : 128GB SSD (kingston) + 2 * 1TB WD blue drives

Question:

1. Should I upgrade max RAM supported to 8GB or not to bother with it and upgrade the CPU, MOBO & RAM?
2. What is the best possible CPU ( within the budget) that I can go for , in this mobo?

I request you recommendation.

 

[Tech_Wiz]

CPU & Mobo Combo is too weak in performance. That should be upgrade first. Then RAM.

 

[bssunilreddy]

AMD FX6300 -7000,
Gigabyte GA-78LMT-USB3 -4900,
Kingston HyperX Fury 8GB 1866Mhz -3200.
TOTAL -15,100.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($98.00 @ NCIX US)
Motherboard: Gigabyte GA-78LMT-USB3 Micro ATX AM3+ Motherboard ($48.98 @ Newegg)
Memory: Kingston HyperX Fury Red 8GB (1 x 8GB) DDR3-1866 Memory ($48.49 @ SuperBiiz)
Total: $195.47
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-09-11 08:02 EDT-0400