I wouldn’t bother with spikes. But if it will bug you not to try them then by all means go for it.
My Moabs are almost as massive. Here’s how I turned it into a relatively easy one man job.
First, measure three corners of each speaker where they stand right now. Cut a piece of paper to match their footprint. Place the paper on the Podium centered L to R and back to where you think you will want it, with a lot more base sticking out in front than in back. Tape the paper to the Podium.
"Walk" the speaker off to one side. Put the Podium where you want the speaker to go. Measure to the corners of the paper to be sure it is exactly where you want it. Now all you have to do is walk the speaker onto the Podium.
Tilt and walk it close as you can get it. Watch the towers! When you’ve gone as far as you can this way, lean it onto the Podium, go around to the other side, and walk it the rest of the way into position. No heavy lifting, it is all a matter of balance and leverage.
If you want to do spikes, do spikes. Then use the same technique to remove them. Tilt the speaker to one side. Place a piece of wood under the raised side, remove the spikes on that side. Tilt and remove the wood, lower the speaker. Repeat on the other side. Leave the paper there to protect the finish on the speaker. Easy peasy.