So you dont have another brew already on the go, but how are you making this wort? You cant be taking much of the lauterings at all. So here is my proposition: Collect the second half of the lauterings and make that into a mid strength brew, pitch the yeast or starter into that and let it ferment for a week. No chill the first runnings and first concentrated lauterings. then next weekend, rack the mid strength into secondary, and pitch the 1.080 wort onto the yeast cake.
It's an idea.
Hell, I did a 1.050 brew last monday, boil finnished about 11pm, and was way too late to do anything, so I wrapped the kettle with lid on up with glad wrap and then the next night I bought it back to boil and nochilled it, left it in the bath overnight, then put it in the fridge. On the friday of that weekend I started a starter, fermented it until sunday, but time got away from me, and it is still in the fridge and still havent pitched as yet! So, time is a relative thing. Wort will keep in the fridge for quite a while especially if you nochill (not sure what the proper procedures are for nochill (no expert), but I just fill a clean and preferably sanitised (though not always) fermenter with very hot wort (I use light blue 20L jerry cans from bunnings). Again I'm no expert, just a hack. I wouldnt reccomend my procedures, but the ideas could be useful.
I did do a high gravity brew a while ago known as 'leftovers brew, everythings going in' and I pitched a single packet of s-23 from memory. It took 5 days to start, and didnt have the expected attenuation. What I learnt from that is that one needs massive amounts of yeast to ferment a high gravity brew, and I suspect that can only be attained by pitching onto a yeast cake or large slurry, otherwise, the starter would be so large that it ends up diluting the OG.