Late 2008 aluminium Macbook with ML...? PLEASE HELP!

Hello,

I'm currently running SL on a Late 2008 Aluminium Macbook and thinking of upgrading to Mountain Lion. I know this can be done. But I'm not sure if Mountain Lion would run smoothly given the age of my Mac. It is very important that my system is smooth and stable as I use my Mac for work!

Here's are my details;

Model Name: MacBook
Model Identifier: MacBook5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MB51.007D.B03
SMC Version (system): 1.40f2
Serial Number (system): W89121X98QR
Hardware UUID: A94E097D-DC57-516C-B711-58FD9D912AB9
Sudden Motion Sensor:
State: Enabled

And graphics.....

NVIDIA GeForce 9400M:

Chipset Model: NVIDIA GeForce 9400M
Type: GPU
Bus: PCI
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0863
Revision ID: 0x00b1
ROM Revision: 3385
Displays:
Color LCD:
Resolution: 1152 x 720
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Built-In: Yes
Display Connector:
Status: No Display Connected


Thoughts anyone?

If anything were to go wrong, how easy is it to go back? Is there a way to easily restore my computer back to how it is now?

Any advice much aprecated!

Thank you very much in advance,


BertieTBE

Mountain Lion runs fine on my early 2009 white macBook and it has the same RAM processor and graphics card as your machine