-A bit of polishing just to ensure proper feeding. Magazine floor plat(follower) & feed ramp.
-Regulating express rear sights to chosen ammo.
-Adjust trigger: to a heavier than sport usage, as to not have an accidental shot go off when under stress.
-Make sure the rifle has been reinforced around the rear web area of the stock with a minimum of a steel cross-bolt(the CZ should come this way NIB), but a better custom reinforcement can be installed by any gunsmith.
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If you like the Win 70's line, have a look at CZ's Standard model. These have beautiful classic lines & are true work-horses, making these P-H favorites. As in any dangerous game rifle make sure these fonction 100 % properly, as Murphy's law may get you at the worst moment.
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Familiarise yourself with legal calibers needed in country where Safari will be + check transport laws(some countries forbids the transport, other countries oblige hard cased luguage. Buying a too strong caliber will only leave you with another rifle hanger, if possible buy a ex.: .375 H&H, this will leave you with a more multi-purpose tool(good for big dangerous game in North America & MAY BE GOOD for African game. If for some reason you choose the Win. 70 then for Pete sakes get one with a claw extractor. Some P.H. tape the hinged triggers plate with heavy duct-tape as to not get a bad surprise when getting one of the big 5 charging you.