Need help choosing my first amp for my first speakers

Hi, I am completely new to this world of hi-fi audio and I would like some help from the collective intelligence. Please bear with me even if I sound like someone who has no idea because I am.

I have just purchased my first set of speakers. I bought a used Boenicke W5 SE+. And I am looking for an amp to go with it. The speakers were a good deal but still not cheap and Im already mostly hitting my budget limit. 

I don't have any gear right now (I really mean 0), so my initial thought was to buy a Wiim amp to start off and then start changing to a more serious amp later on. (I like that it has everything including a streamer for me to get going right away)

So my questions are 
1. will the Wiim amp be able to power Boenicke W5 SE+?

2. What do you think of the plan to start with all integrated cheap amp and then changing later?

2. Any other amp suggestions for the speakers in a similar price range?($500 ish)

3. Can I just get Audio cables from Amazon?

4. How do you calculate wattage for the speakers from the speaker specs below?

5. Any other tips for a complete beginner would be appreciated.
 

Specs for Wiim Amp
https://wiimhome.com/wiimamp/specs
Specs for Boenicke W5 SE+

-

Sensitivity: 83-86 dB / watt / m depending on frequency

Nom. impedance: 4 ohms

Weight: 3.5 kg / piece (speaker only)

Standard Version

• 5″ long throw (X-max = 9,25mm) bass driver, tuned to 50 Hz, no crossover
• 3″ widebander made to spec, 1st order high pass filter, unique electromechanical 8-cm parallel spiral resonator installed
• Internal wiring orientation-optimised silk-wrapped high-frequency stranded litz
• WBT NextGen binding posts
• Rear ambient tweeter
• Harmonisation included

SE+ Version

• 2-cm copper / 2-cm copper gold straight resonator combination installed at both widebander and bass driver in series, in addition to the parallel device
• Mundorf Silver-Gold-Oil capacitor for widebander, added Duelund Tinned Copper Foil 0.01 uF bypass capacitor
• Harmonix RF-5700 tuning bases at widebander’s magnet
• Added proprietary acoustic phase linearisation network
• Harmonisation included

Thanks for all the help!