Upgrading Domino

[sjones@xxxxxxxxxxxxxx]

We are looking at upgrading our Domino servers from 7.01fp1 to 8.5.1 & 
8.5.0 (Sametime server).  Looking at the 8.5 Admin guide there are 3 ways 
to do the upgrade:

1).Launch the Domino Server Installation and Setup wizard through the 
System i Navigator
2).Use the InstallShield interface by running the SETUP.EXE file from the 
product CD-ROM
3).Use the LODRUN command from the command interface.

Which method do you suggest that we use to do the upgrade? 

I have downloaded & unziped the files into 2 different folders on a PC 
from Passport Advantage.   We obviously have not done a Domino upgrade for 
a long time & I think we used the lodrun command last time since we 
received it on CD. 

We will also be upgrading Sametime to 8.5 and from what we have read it 
needs Domino 8.5.0 so that is why we will be doing the 8.5.0 server.  We 
do have the necessary PTF's applied for Domino 8.

Thanks in advance.

Steve Jones