According to the system requirements posted by Lumion Software:

10k PassMark points for CPU: Min entry i7 4790
8k PassMark points for GPU: Min entry RX480/GTX970/GTX1060

If you follow all the recommended specs then it will be over your budget. Recommended specs includes an i7 processor (will use i7 7700 instead of i7 4790 because the latter is long obsoleted and replaced by the latest gen which is the former), 16GB DDR4 RAM, GTX1060 6GB as GPU, 1TB HDD (SSD is not included), a 80+ Gold rated good quality PSU (not necessary need to follow this as this is just a recommendation from them after all but it is good to keep this) and a standard ATX casing with a mATX mobo (with 4 RAM slots for future RAM expansion).

Intel Core i7 7700 - RM 1424
Gigabyte B250M-D3H - RM 419
G.SKill Aegis 16GB (8GB x 2) DDR4 2400MHz RAM - RM 550
Palit GTX1060 6GB GDDR5 Dual - RM 1229
WD Blue 1TB HDD - RM 219
EVGA SuperNova 550 G2 - RM 459
Tecware Edge - RM 149

Total: RM 4449 (E TECH price inclusive of GST)

At last, monitor with 1080p resolution is not included too, FYI.

How about these?

Core i7-7700 - 1378
Gigabyte B250M-D3H - 449
Corsair 8GB DDR4-2133 x2 - 508
Gigabyte GTX 1050 2GB DDR5 - 599
Seagate 1TB HDD - 212
Corsair VS 550W - 248
Additional 12cm fan - 25
Thermaltake Versa (pick your model) case - 169
LG 22MP48HQ 21.5" monitor - 408

RM3996 total (C-Zone prices)

GTX1060 6GB is around RM1300, GTX1070 can be found for around RM1750. I wouldn't pay topup that much for increased power consumption.

Thanks for the quick reply.

Do you have any idea all these software is mainly processor or graphic card hunger ?

Try to look for forum to know more but so far couldn't.

by any chance should i get more than 16gb like 32gb ram so i could multi task on the rig ?

thanks !

is your rig up for sale ?
so i could save hell a lot. hahaha

by any chance should i pump more money into the processor with higher clock speed and reduce my fund on the graphic card?
or i should distribute the fund well between both?

since another sifu mention that graphic design is always on processor > ram > gpu

How much cheaper is the used HDD compared to new HDD? If it is not too much then just get a new one 

WD Green is a turtle, I'll spend more to get a 7,200 RPM HDD instead 

I'll request for HDD health and bad sector report first, at least I get to know the status of the HDD before I make the purchase right 

Wait, there is a WD Green variant with 7,200 RPM? 

AFAIK only the WD Black 2TB is running at 7,200 RPM (for WD branded HDD).

Hmmm, price is way too suspicious, up to you 

how about gigabyte gtx 1060 g1 gaming? in term of cooling.

How about these?

AMD Ryzen 5 1600 - 1039
Asus PRIME B350M-A - 445
Kingston 8GB DDR4-2133 X2 - 508
Gigabyte GTX 1050 2GB DDR5 - 599
WD Blue (7200rpm only) or Seagate 1TB - 212
Corsair VS 450W - 184
Additional 12cm fan - 25
Thermaltake Versa case - 169
LG 22MP48HQ 21.5" monitor - 403

RM3584 total (C-Zone prices)

Yup. You will lose 2 CPU core for Ryzen 5 1400 though.