Unpack the tyre and stick an inflated tube inside (no rim/wheel). Give it a day and it should now hold that shape. As for getting it on, youve picked a tight combo so you will struggle. Be calm, go slowly, tiny bits at a time. If you approach it with a slow methodical approach it will go on, get yourself settled, make some space to sit on the floor so you dont get annoyed etc. Good tyre levers help, i like TACX ones as they have a sharp hook to get under the tyre and have a bend which helps pushing the tyre over. Pedros ones are also good but miss this feature.
Once on inflate and leave a few days if possible, then remove and refit (i know it will be horrible, but it will help stretch the bead and also train you in removing/re-fitting which you will be glad of when the time comes!)