Some comments. Yes, that is somewhat of a cookie bite loss. The good news is that you can still hear some of the high frequencies that a lot of us with the ski slope loss do not have. You should be fine with a RIC style HA with a standard lower power receiver.
I would insist on having the REM done. If they don’t do it then they do not know what volume is being produced in your actual ears. All ears are different, and the computer program cannot exactly predict what the volume level is going to be in your ears, just the average ear. A fitter is cutting corners if they do not do the REM test and subsequent adjustments to target.
I don’t think you have to be concerned about getting a Signia HA if it is the latest Pure 7Nx model. They are premium level hearing aids. The work best with an iPhone, but can be set up to use an Android. Keep in mind that this is essentially the same HA as the Kirkland Signature 8.0 that sells for $1600 a pair in the US. I think you can expect a much higher price if it has the Signia name on it.
With your minimal loss at the very high frequencies you should look for a HA that can go up in frequency. The Signia 7Nx claims their HA’s go up to 12,000 Hz. I can’t verify that from personal experience with the KS8.0 because my hearing is toast at those frequencies.
What you should ask the fitter about is using the DSL v5 fitting formula. It attempts to restore the higher frequencies, while other common formula like the NAL-NL2 kind of gives up on the high stuff, and tries to restore the speech range.