server and software upgrade question

[sundba]

Hi Experts,

we are planning to upgrade the End of life servers to new servers and from solaris 8/9 to 11. Server loads are minimum and not heavily loaded. After analysis we came to conclusion
to use the below. Can experts out there please let me know whether it make sense or any way we can reduce the cost by using other servers ? suggestions welcome and Thanks for your time

current estimated costs comes to huge amount in several thousands pounds.

Existing Server New Device Purpose Server Type
SF280R/1x900+/1GB/1x36/DVD/OS Sun Fire X4170 Web Server Physical server
E220R 450MHz 1GB 2-36GB 1PS Sun Fire X4170 Jump station Physical server
E220R 450MHz 1GB 2-36GB 1PS Sun Fire X4170 Jump Server Physical server
E220R 450MHz 1GB 2-36GB 1PS Sun Fire X4170 Jump Server Physical server
EOL Netra t1 AC 360Mz 512M/
SF280R/1x900+/1GB/1x36/DVD/OS Netra SPARC T4-1 server Squid Proxy / DNS Bind Server / Iplanet Virtualised server
Sun Fire V120 650Mz 1GB 2x36G /
SUNFIRE V100 Netra SPARC T4-1 server DNS Bind / NTP Server Virtualised server

Many Thanks in Advance,
sundba