The Pole has enjoyed a fine run of form so far this season with three wins from five starts. He trails championship leader Yohan Rossel - who is not competing in Spain - by 15 points with two rounds remaining.
Drivers in WRC3 may count their best five scores from seven rallies. Rossel has already contested six events, which means Kajetanowicz has a good chance of glory providing he can piece together strong results here and at FORUM8 ACI Rally Monza next month.
"I think it will be crucial to find a proper feeling right from the beginning," explained the Škoda Fabia Rally2 pilot.
"I expect small gaps between the crews, so a good pace at the start might bring some advantage. We will compete against fast drivers but I am sure that we can do our best," he added.
Reigning Spanish champion Pepe López is one driver Kajetanowicz will be keeping a keen eye on. The Fabia youngster is yet to win a rally in WRC3, but that could soon change on his home roads. López’s fellow countryman Jan Solans could also pose a threat with his Citroën C3 Rally2.
Škoda-backed Dominik Stříteský will make his WRC debut in another Fabia, whilst Chris Ingram wheels out his similar car following a podium last time out in Greece. Asphalt rookie Mikko Heikkilä is also on the list.
Flying Finn Emil Lindholm has already started the maximum seven rallies and, as such, has entered the event as co-driver to Reeta Hämäläinen. The pair will swap before the start to enable Lindholm to drive within the WRC3 field, although he will not be eligible for championship points.
Other entries include Fabrizio Zaldivar in a Fabia as well as Motorsport Ireland Rally Academy driver Josh McErlean in a Hyundai i20 R5.
Aside from the championship regulars and rising stars, 49-year-old Brit Neil Simpson is about to realise his dream of competing on the world stage.
Simpson drove for Volkswagen’s factory team in the British Rally Championship during the early 2000s and will debut a Toksport-prepared Škoda in Spain.
“I remember when I was driving for Volkswagen in 2001 that we went out to Catalunya with a view to competing in the WRC the following year – but I didn’t think it would take another 20 years to actually get there," he joked.
"I’ve always wanted to do WRC Spain – it’s a rally I’ve been very fond of as an onlooker and also when working with various younger drivers over the past couple of years. Serkan Duru from Toksport has made this happen for me and I’m hugely grateful for that."
- Full coverage from Rally RACC - Rally de España will be available on WRC+ All Live here, including every stage broadcast as it happens as well as key interviews, features and expert analysis from the service park.