You've received several replies giving useful advice in bits and pieces, some without providing the 'Why'!
So let me try to pull this altogether!😉
The Elke is a Fish Cutter, very similar to my Billing Boats Danish North Sea fish cutter Gina 2.
They were 'plodders', max 10 knots at an educated guess. So you won't need a mighty meaty motor or lots of volts to drive it.
The original Graupner instructions recommend a 280 type brushed motor.
More than adequate for scale speed for a fish cutter. I'm assuming that the prop is approx 30mm diameter like my Gina 2 cutter. Which incidentally I propose to propel with a 50s vintage Taycol Target motor.
BUT: You say that you have already purchased a Quicrun ESC.
So your choice of motor is now defined by the type of that ESC.
As Rowen says the Quicrun range includes both brushed and brushless types.
Due to differences in the control technology of brushed and brushless motors you can not mix the types. I.E. brushed motor with brushless ESC or vice versa!
A brushed motor is simply DC driven. Connect a battery and it runs. 😀
A brushless motor is in essence a type of 3-phase AC motor and requires a corresponding electronic speed controller (ESC) to run it.
So which Quicrun ESC have you bought?
Can appreciate your trepidation re LiPos as a newcomer to the technology.
Like Rowen I have had no problems with them for 4 years now.
But I have nearly 50 years of electronics engineering behind me so perhaps my perspective differs a bit from that of a novice!😉
By all means stick to NiMh if you are happier with that - model boating should be fun not worrying! But remember; ANY battery type can bite you if you maltreat it.
Even a so called 'Sealed' Lead Acid produces hydrogen gas when charging and vents it if the internal pressure gets too high through charging too long at high current!! So put yer fags out!😉 And buy a decent charger capable of charging AND monitoring NiMh. LiPo and SLA batteries. Cheaper than buying chargers for all three types 😀
BTW: A motor (brushed or brushless) does not care what type of battery you use 😊
All it wants is enough current at the right volts, so that can come from an NiMh, a LiPo, an SLA lead accumulator, or even silver oxide cells if you've just won the lottery 😁
So motor and battery can not be incompatible.😉 But motor and speed controller (ESC) CAN be!!🤔
Motor and ESC:
As said, motor choice will depend on the type of Quicrun ESC you have bought!
I hope that it was one of the brushed motor types; e.g. 1060.
A fish cutter does not need a powerful high revving or high torque brushless motor for reasons stated above.
If you have bought one of the Quicrun xxBLyy types of brushless ESC I suggest you save that for a later project, perhaps a fast MTB or PTB, or sell it and purchase a simple brushed ESC, e.g.Mtroniks Viper Marine 10. Or the Quicrun 1060.
RC kit: Transmitter & Receiver set (TX/RX).
I see that you have a 6 channel FlySky set 👍
Don't know it personally but it has similarities with my Turnigy set and several MB site members use variants of FlySky kit so you should be OK for set up / operating help if needed.
6 channels gives you scope for special functions like lighting etc etc.
But that's further down the line 😉 We can help with that when you get that far 👍
Hope this helps clarify things a little.
BTW: A few pics, or even make and type numbers, of what kit and equipment you have are always helpful to us when we are asked for advice re 'The Way Forward'.
The only daft question is the one that you are afraid to ask!😉
This site is full of bin there done that, 'this works fine' or 'tried this, won't do it again because ...' members and hundreds of years of experience! Use it 👍
Cheers, Doug 😎